I-PD Controller Design for Integrating Time Delay Processes Based on Optimum Analytical Formulas

Abstract

In industrial applications, it is possible to encounter processes that have an integrator in its transfer function. The most widely used controllers in the control of these processes are Proportional-Integral-Derivative (PID) controllers. However, it is well known that PID controllers do not perform well in controlling integrating processes. Hence, in this study, the use of I-PD controllers for controlling integrating processes has been given. Optimal and analytical tuning rules have been derived to identify tuning parameters of the I-PD controller. Simulation examples have been provided to show the use of the proposed optimal I-PD tuning formulas. Comparisons with existing PID and I-PD design methods to control integrating processes have been supplied to illustrate the closed loop performance of the proposed optimal I-PD design approach. (C) 2018, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.